ENGINEMAN 1 & C121.10Figure 3-27.—Accessory drive chain link assemblies.these inspections. An idler sprocket and chaintightener are used on most engines to adjust chaintension. During operation, chains increase slightlyin length because of stretch and wear. Ad-justments should be made for these increaseswhenever necessary.When you are installing a new chain, peen theconnecting link pins into place, but avoid excessivepeening. After peening, make sure the links movefreely without binding in position. Cotter pinsmust be secured or the joint pin ends riveted,whichever is applicable. Repair links should becarried at all times. Always check engine timingafter installing a new timing and accessory drivemechanism.TURBOCHARGERSThe turbochargers used in the Navy today mayoperate with temperatures as high as 1200 °F andTHIS SPACE INTENTIONALLY LEFT BLANK3-40
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